Further Math Exam 1: Answers + Discussion!

[vididid]

lost eight
35+ still possible ?!!

[brenden]

lost eight
35+ still possible ?!!

Definitely!

[vcestudent123]

lost eight
35+ still possible ?!!

You still have Exam 2, so definitely possible.

[brenden]

So is there pretty much absolute consensus now? (haven't been following the thread or updates)

[Addzkebabs]

Hey guys,

Can someone please verify and explain why number patterns question 7 is C? Made a few really bad mistakes and am on the verge of tears haha bye bye 45+ 

Cheers

[vididid]

how much would i need to get on exam two to get at least above a 36-37?

[Chloe11]

For the Core isn't the answer to question 12 C? Because the index is 1.25

[vcestudent123]

Hey guys,

Can someone please verify and explain why number patterns question 7 is C? Made a few really bad mistakes and am on the verge of tears haha bye bye 45+ 

Cheers

What I did was instead of p and q

I replaced them with numbers, so for example 1 and 2..

Found 4th and 5th term and found the difference, which was p +q

[IntelxD]

For the Core isn't the answer to question 12 C? Because the index is 1.25

No. You can refer to VCAA-2011 exam 1 q12. It is the same question with different values.

Here is the examiners report.

http://www.vcaa.vic.edu.au/Documents/exams/mathematics/further1_assessrep_11.pdf

[Addzkebabs]

What I did was instead of p and q

I replaced them with numbers, so for example 1 and 2..

Found 4th and 5th term and found the difference, which was p +q

Genius haha, thanks for that 

[soysauce]

Can someone please verify and explain why number patterns question 7 is C?

t₁ = p
t₂ = q
t₃ = t₁ + t₂ = p + q
t₄ = t₃ + t₂ = p + q + q = p + 2q
t₅ = t₄ + t₃ = p + 2q + p + q = 2p + 3q

Difference between t₄ and t₅:
t₅ - t₄ = 2p + 3q - (p + 2q) = p + q

[vcestudent123]

For the Core isn't the answer to question 12 C? Because the index is 1.25

Sadly, no :/
It was honestly an extremely unfair question.

Check out Further math Exam 1 2011 Core: Q12 answers on VCAA.

It was near identical to the one we had this year.

Pretty much what you had to do was.. rearrange seasonal index formula, so it calculates for deseasonalised.

Then on the calculator I did solve (x/1.25 = kx, k)
(x = actual sales)
k= 0.8
1-0.8 = 0.2

[nugz]

Can someone please explain to me why question 11 core is E? I thought to find the deseasonalised value you have to divide the actual figure by the seasonal index?

[Dan1995]

Sadly, no :/
It was honestly an extremely unfair question.

Check out Further math Exam 1 2011 Core: Q12 answers on VCAA.

It was near identical to the one we had this year.

Sorry but I don't think it's that unfair, anyone who had done the previous VCAA exams as revision and checked the answers they werent sure about or got wrong would've known how to answer that question. Hopefully your teacher recommended you do that as preparation for the exam?

[JohnH18]

Cool 
That Question 6 though, that was really unfair for this year, but, I do think it's A cause of the CAS.

Took me a bit but i thought it was simple once you figure out what to do, you know the median and Q3, calculate the upper fence and done